Not For Jews - An adjective, used to describe an event, activity or task deemed to be too physically demanding, dangerous, noisy, long or painful for your average, run-of-the-mill, non-sporty Jew.
Note: this is not an anti-semetic abbreviation, and is used mainly by Jews themselves.
Gillian: My boss is heading to Mongolia tomorrow to do a 12-day hike. He's going to be carrying a tent with him and enough supplies for the whole trip!
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.